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I have the same problem. After spending 5 hours
with Sony tech support all the way up to their engineers, I found that once you
upgrade the firmware to 1.40 + your drive will burn 1X & 2X DVD at 1X only. 4X DVD will burn at 2X. The upgrade cut back
the speed so the drive won't burn out if you use 4X media.The Sony site had a
warning that you must upgrade the firmware or you will damage your drive using
4X media. It also states the this upgrade will improve your drives performance!
Sony say that they are working on changing their webpage to give the correct
info. I just purchased 50 Pioneer certified ProDisk 2X blanks. Nero will only
let them burn at 1X. Now that I've upgraded my drive is only half the speed it
used to be. Sony told me that their is no way change the firmware back! The
bottom line here is not to upgrade the firmware and don't use 4X
media.
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